| 主題 | OJ | 題目 |
| 基礎 | ZeroJudge | C++基礎語法 |
| 基礎 | GreenJudge | 基礎題庫 (50題，限 C++) |
| 基礎 | ITSA | 線上程式競賽基礎題目專區 (40題) |
LeetCode 題目
| 分類 | OJ | 題目 |
| 條件 | LeetCode | 292. Nim Game |
| 迴圈 | LeetCode | 374. Guess Number Higher or Lower |
| 陣列/list | LeetCode | 852. Peak Index in a Mountain Array |
| LeetCode | 1089. Duplicate Zeros |
| LeetCode | 88. Merge Sorted Array |
| LeetCode | 202. Happy Number |
| LeetCode | 507. Perfect Number |
| LeetCode | 628. Maximum Product of Three Numbers |
| LeetCode | 643. Maximum Average Subarray I |
| LeetCode | 665. Non-decreasing Array |
| LeetCode | 728. Self Dividing Numbers |
| LeetCode | 807. Max Increase to Keep City Skyline |
| LeetCode | 840. Magic Squares In Grid |
| LeetCode | 849. Maximize Distance to Closest Person |
| LeetCode | 985. Sum of Even Numbers After Queries |
| LeetCode | 941. Valid Mountain Array |
| LeetCode | 1030. Matrix Cells in Distance Order |
| LeetCode | 1046. Last Stone Weight |
| LeetCode | 1005. Maximize Sum Of Array After K Negations |
| LeetCode | 977. Squares of a Sorted Array |
| 字串 | LeetCode | 387. First Unique Character in a String |
| LeetCode | 520. Detect Capital |
| LeetCode | 824. Goat Latin |
| LeetCode | 202. Happy Number |
| LeetCode | 728. Self Dividing Numbers |
| LeetCode | 344. Reverse String |
| LeetCode | 383. Ransom Note |
| LeetCode | 771. Jewels and Stones |
| LeetCode | 804. Unique Morse Code Words |
| map/dict | LeetCode | 500. Keyboard Row |
| LeetCode | 389. Find the Difference |
| LeetCode | 860. Lemonade Change |
| LeetCode | 961. N-Repeated Element in Size 2N Array |
| LeetCode | 575. Distribute Candies |
| LeetCode | 169. Majority Element |
| LeetCode | 238. Product of Array Except Self |
| LeetCode | 287. Find the Duplicate Number |
| LeetCode | 997. Find the Town Judge |
| LeetCode | 1030. Matrix Cells in Distance Order |
| set | LeetCode | 136. Single Number |
| LeetCode | 229. Majority Element II |
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